CN105966384A - Automobile and emergency braking control method and system thereof - Google Patents
Automobile and emergency braking control method and system thereof Download PDFInfo
- Publication number
- CN105966384A CN105966384A CN201610355885.6A CN201610355885A CN105966384A CN 105966384 A CN105966384 A CN 105966384A CN 201610355885 A CN201610355885 A CN 201610355885A CN 105966384 A CN105966384 A CN 105966384A
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- China
- Prior art keywords
- automobile
- brake
- variable quantity
- brake pressure
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/03—Brake assistants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
Abstract
The invention discloses an automobile and an emergency braking control method and system thereof. The method comprises the steps that vacuum degree variable quantity of a vacuum booster of the automobile and/or opening degree change information of a brake pedal of the automobile is detected; when it is judged that emergency braking of the automobile needs to be implemented currently according to the vacuum degree variable quantity and/or the opening degree change information of the brake pedal, current brake pressure of a brake master cylinder of the vacuum booster is obtained, and a safety belt signal of the automobile is detected; and when the current brake pressure of the brake master cylinder is lower than a preset maximum brake pressure and a safety belt of the automobile is in a fastened state, the brake pressure of the brake master cylinder is made to reach the preset maximum brake pressure by controlling the vacuum booster. According to the method, when the brake pressure is insufficient due to insufficient stamping braking force or response delay of the driver during emergency braking of the automobile, the brake pressure of the automobile is made to reach the preset maximum brake pressure by controlling the vacuum booster, so that the automobile is effectively braked.
Description
Technical field
The present invention relates to automobile technical field, be specifically related to the brake hard control method of a kind of automobile, a kind of automobile urgent
Braking control system and a kind of automobile.
Background technology
Along with the development of auto industry, automobile has had become as the requisite vehicles in people's daily life,
While promoting socio-economic development, also bring serious traffic safety problem.Vehicle accident not only causes huge people
Member's injures and deaths, return the whole world and bring huge economic loss.
Automobile is when running into front emergency situations, all it may happen that the situation of brake hard.Automobile in an emergency braking situation,
It may happen that driver's foot steps on the situations such as brake force deficiency or response delay, and cause automobile not stop in time, thus cause
Accident.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, the first of the present invention purpose is to propose the brake hard control method of a kind of automobile, the method can be at vapour
During car brake hard, when driver's foot steps on brake force deficiency or response delay causes brake pressure deficiency, by controlling vacuum
Booster makes the brake pressure of automobile reach maximum brake pressure, thus realizes the effective brake to automobile.
Second object of the present invention is to propose the brake hard control system of a kind of automobile.
The third object of the present invention is to propose a kind of automobile.
For achieving the above object, first aspect present invention embodiment proposes the brake hard control method of a kind of automobile, including
Following steps: opening of the vacuum variable quantity detecting the vacuum booster of described automobile and/or the brake pedal detecting described automobile
Degree change information；Aperture change information according to described vacuum variable quantity and/or described brake pedal judges that described automobile is current
When needing to implement brake hard, obtain the current brake pressure of the master cylinder of described vacuum booster, and detect described automobile
Belt signal；When the current brake pressure of described master cylinder is less than the maximum brake pressure preset and the peace of described automobile
When full band is in tie-down state, by controlling described vacuum booster so that the brake pressure of described master cylinder reaches described pre-
If maximum brake pressure.
The brake hard control method of automobile according to embodiments of the present invention, first detects the vacuum of the vacuum booster of automobile
Variable quantity and/or the aperture change information of brake pedal of detection automobile, and according to vacuum variable quantity and/or brake pedal
Aperture change information judges, when automobile is currently needed for implementing brake hard, to obtain the current brake pressure of the master cylinder of automobile,
And the belt signal of detection automobile, when the current brake pressure of master cylinder is less than the maximum brake pressure preset and automobile
Seat belt when being in tie-down state, by controlling vacuum booster so that the brake pressure of master cylinder reaches default maximum
Brake pressure.When automobile emergency brake, the method can step at driver's foot that brake force is not enough or response delay causes braking
During insufficient pressure, make the brake pressure of automobile reach maximum brake pressure by controlling vacuum booster, thus realize automobile
Effective brake, reduce collision accident generation, guarantee driving safety.
It addition, can also have the technical characteristic added as follows according to the brake hard control method of the above-mentioned automobile of the present invention:
In one embodiment of the invention, judge that described automobile is currently needed for implementing promptly to make according to described vacuum variable quantity
Dynamic, including: judge that whether described vacuum variable quantity is more than the first predetermined threshold value；If described vacuum variable quantity is more than institute
State the first predetermined threshold value, then judge that described automobile is currently needed for implementing brake hard.
In one embodiment of the invention, judge that described automobile is currently needed for according to the aperture change information of described brake pedal
Implement brake hard, also include: judge the aperture change of described brake pedal according to the aperture change information of described brake pedal
Whether amount is more than the second predetermined threshold value；If the aperture variable quantity of described brake pedal is more than described second predetermined threshold value, then sentence
Disconnected described automobile is currently needed for implementing brake hard.
In one embodiment of the invention, sentence according to the aperture change information of described vacuum variable quantity and described brake pedal
Disconnected described automobile is currently needed for implementing brake hard, also includes: when described vacuum variable quantity is more than described first predetermined threshold value
And the aperture variable quantity of described brake pedal more than described second predetermined threshold value time, it is judged that described automobile is currently needed for implementing urgent
Braking.
In one embodiment of the invention, when by controlling described vacuum booster so that the brake pressure of described master cylinder
When reaching described default maximum brake pressure, also control described automobile and send alarm sounds information.
For achieving the above object, second aspect present invention embodiment proposes the brake hard control system of a kind of automobile, including:
Detection components, described detection components include detecting the vacuum variable quantity of the vacuum booster of described automobile the first detector and/
Or detect the second detector of the aperture change information of the brake pedal of described automobile；Entire car controller, described entire car controller
Being connected with described detection components, described entire car controller is in order to opening according to described vacuum variable quantity and/or described brake pedal
Degree change information judge described automobile be currently needed for implement brake hard time, obtain described vacuum booster master cylinder ought
Front brake pressure, and detect the belt signal of described automobile, when the current brake pressure of described master cylinder is less than presetting
When the seat belt of maximum brake pressure and described automobile is in tie-down state, by controlling described vacuum booster so that described system
The brake pressure of dynamic master cylinder reaches described default maximum brake pressure.
The brake hard control system of automobile according to embodiments of the present invention, the vacuum booster of the first detector detection automobile
Vacuum variable quantity, the aperture change information of the brake pedal of the second detector detection automobile, entire car controller is according to vacuum
The aperture change information of variable quantity and/or brake pedal judges, when automobile is currently needed for implementing brake hard, to obtain vacuum booster
The current brake pressure of master cylinder, and detect the belt signal of automobile, when the current brake pressure of master cylinder is less than
When the maximum brake pressure preset and the seat belt of automobile are in tie-down state, by controlling vacuum booster so that master cylinder
Brake pressure reach default maximum brake pressure.This system can step on braking when automobile emergency brake at driver's foot
When power is not enough or response delay causes brake pressure deficiency, the brake pressure of automobile is made to reach maximum by controlling vacuum booster
Brake pressure, thus realize the effective brake to automobile, reduce the generation of collision accident, guarantee driving safety.
The brake hard control system of above-mentioned automobile can also have a following additional technical characteristic:
In one embodiment of the invention, described entire car controller, it is additionally operable to judge whether described vacuum variable quantity is more than
First predetermined threshold value, and when described vacuum variable quantity is more than described first predetermined threshold value, it is judged that described automobile is currently needed for
Implement brake hard.
In one embodiment of the invention, described entire car controller, it is additionally operable to the aperture change letter according to described brake pedal
Breath judges whether the aperture variable quantity of described brake pedal is more than the second predetermined threshold value, if the aperture change of described brake pedal
Amount more than described second predetermined threshold value, then judges that described automobile is currently needed for implementing brake hard.
In one embodiment of the invention, described entire car controller, it is additionally operable to when described vacuum variable quantity is more than described the
When the aperture variable quantity of one predetermined threshold value and described brake pedal is more than described second predetermined threshold value, it is judged that described automobile currently needs
Brake hard to be implemented.
In one embodiment of the invention, described entire car controller, be additionally operable to when by control described vacuum booster so that
When the brake pressure of described master cylinder reaches described default maximum brake pressure, also control described automobile and send alarm sounds
Information.
To achieve these goals, third aspect present invention embodiment proposes a kind of automobile and includes: second aspect present invention is real
Execute the brake hard control system of the automobile of example.
The automobile of the embodiment of the present invention, by the brake hard control system of above-mentioned automobile, it is possible to when automobile emergency brake,
When driver's foot steps on brake force deficiency or response delay causes brake pressure deficiency, make automobile by controlling vacuum booster
Brake pressure reaches maximum brake pressure, thus realizes the effective brake to automobile, reduces the generation of collision accident, ensures row
Car safety.
The advantage of the aspect that the present invention adds will part be given in the following description, and part will become bright from the following description
Aobvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the flow chart of the brake hard control method of automobile according to an embodiment of the invention.
Fig. 2 is according to the flow chart of the brake hard control method of the automobile of one concrete example of the present invention.
Fig. 3 is the block diagram of the brake hard control system of automobile according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
The automobile proposed according to embodiments of the present invention and brake hard control method thereof and system are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the brake hard control method of automobile according to an embodiment of the invention.
As it is shown in figure 1, the brake hard control method of this automobile comprises the following steps:
S1, the aperture change letter of the vacuum variable quantity of the vacuum booster of detection automobile and/or the brake pedal of detection automobile
Breath.
Specifically, by the vacuum variable quantity of the vacuum booster of vacuum-ness detecting device detection automobile, and angle can be passed through
The aperture change information of the brake pedal of detection device detection automobile.
According to the aperture change information of vacuum variable quantity and/or brake pedal, S2, judges that automobile is currently needed for implementing brake hard
Time, obtain the current brake pressure of the master cylinder of vacuum booster, and detect the belt signal of automobile.
It is to be appreciated that the current brake pressure of the master cylinder of vacuum booster described in this embodiment, can be by even
The pressure transducer connecing master cylinder obtains.
In one embodiment of the invention, judge that automobile is currently needed for implementing brake hard according to vacuum variable quantity, including
Judge that vacuum variable quantity, whether more than the first predetermined threshold value, if vacuum variable quantity is more than the first predetermined threshold value, then judges
Automobile is currently needed for implementing brake hard.Wherein, the first predetermined threshold value can be demarcated according to practical situation.
In another embodiment of the present invention, judge that automobile is currently needed for implementing tightly according to the aperture change information of brake pedal
Anxious braking, also includes that the aperture change information according to brake pedal judges that the aperture variable quantity of brake pedal is the most pre-more than second
If threshold value, if the aperture variable quantity of brake pedal is more than the second predetermined threshold value, then judge that automobile is currently needed for implementing promptly to make
Dynamic.Wherein, the second predetermined threshold value can be demarcated according to practical situation.
In yet another embodiment of the present invention, automobile is judged according to the aperture change information of vacuum variable quantity and brake pedal
It is currently needed for implementing brake hard, also includes when vacuum variable quantity is more than the aperture change of the first predetermined threshold value and brake pedal
When amount is more than the second predetermined threshold value, it is judged that automobile is currently needed for implementing brake hard.
S3, when the current brake pressure of master cylinder is in tie-down shape less than the seat belt of the maximum brake pressure preset and automobile
During state, by controlling vacuum booster so that the brake pressure of master cylinder reaches default maximum brake pressure.Wherein, in advance
If maximum brake pressure can demarcate according to practical situation, the current brake pressure of master cylinder can be driver's foot
Step on what brake pedal produced.
Specifically, when driver's foot steps on braking, entire car controller can be helped by the vacuum of vacuum-ness detecting device acquisition automobile
The vacuum variable quantity of power device, and the aperture change information of the brake pedal of automobile is obtained by angle detection device.As truly
Reciprocal of duty cycle variable quantity is more than the first predetermined threshold value, or the aperture variable quantity of brake pedal is more than the second predetermined threshold value, then description
Driver has brake hard to be intended to, and now the distance of driver and front automobile may be relatively near, thus causes that driver's is excessive
Anxiety, thus may cause driver's foot to step on the generation of the situations such as brake force deficiency or response delay.
Therefore, at vacuum variable quantity more than the first predetermined threshold value, or the aperture variable quantity of brake pedal is preset more than second
Presentation time, entire car controller obtains the current brake pressure of master cylinder, then will by connecting the pressure transducer of master cylinder
The current brake pressure of master cylinder compares with the maximum brake pressure preset.If the current brake pressure of master cylinder
Less than the maximum brake pressure preset, then illustrate that the brake force of this automobile is not enough.Now, entire car controller can detect further
Whether driver fastens one's safety belt, if be detected that driver fastens one's safety belt, then can pass through vehicle control unit controls vacuum system
Corresponding electromagnetic valve opened by dynamic booster, so that the current brake pressure of master cylinder reaches default maximum brake pressure, thus
Increase the brake force of automobile, it is ensured that when automobile emergency brake, step at driver's foot that brake force is not enough or response delay causes system
During dynamic pressure deficiency, the brake pressure of automobile is made to reach maximum brake pressure by controlling vacuum booster, it is achieved having of automobile
Effect braking, reduces the generation of collision accident, guarantee driving safety.
In one embodiment of the invention, when by controlling vacuum booster so that the brake pressure of master cylinder reaches default
Maximum brake pressure time, also control automobile send alarm sounds information.Wherein, prompt messages can be buzzing prompting
Sound, LED lamplight flicker etc..
Specifically, electromagnetic valve is opened when vehicle control unit controls vacuum brake assistor so that the current brake pressure of master cylinder
When reaching default maximum brake pressure, entire car controller also sends information warning, honeybee to buzzing prompting apparatus and instrument warning lamp
Ring prompting apparatus and instrument warning lamp send buzzing prompt tone and light flash according to information warning, in order to remind user, thus carry
Rise Consumer's Experience.
To sum up, the brake hard control method of the automobile of the embodiment of the present invention is without using tradition pre-impact or active brakes
The radar system that must carry, can reduce collision accident odds, it is to avoid radar signal is unstable or erroneous judgement band
The potential safety hazard come, and realize low cost.
In order to make those skilled in the art more clearly understand, the present invention, Fig. 2 are the automobiles according to one concrete example of the present invention
The flow chart of brake hard control method.As in figure 2 it is shown, the brake hard control method of automobile can comprise the following steps that
S101, in running car.
S102, it is judged that whether vacuum variable quantity is more than the first predetermined threshold value.If it is, perform step S103；If it does not,
Return step S102.
S103, it is judged that whether the current brake pressure of master cylinder is less than the maximum brake pressure preset.If it is, perform step
Rapid S104；If it does not, return step S102.
S104, it is judged that seat belt is the most.If it is, perform step S105；If it does not, return step S102.
S105, the vehicle control unit controls vacuum booster of automobile is opened electromagnetic valve, is made master cylinder reach maximum brake pressure.
S106, the vehicle control unit controls instrument warning lamp of automobile and buzzing prompting apparatus send information.
S107, terminates.
The brake hard control method of automobile according to embodiments of the present invention, first detects the vacuum of the vacuum booster of automobile
Variable quantity and/or the aperture change information of brake pedal of detection automobile, and according to vacuum variable quantity and/or brake pedal
Aperture change information judges, when automobile is currently needed for implementing brake hard, to obtain the current brake pressure of the master cylinder of automobile,
And the belt signal of detection automobile, when the current brake pressure of master cylinder is less than the maximum brake pressure preset and automobile
Seat belt when being in tie-down state, by controlling vacuum booster so that the brake pressure of master cylinder reaches default maximum
Brake pressure.When automobile emergency brake, the method can step at driver's foot that brake force is not enough or response delay causes braking
During insufficient pressure, make the brake pressure of automobile reach maximum brake pressure by controlling vacuum booster, thus realize automobile
Effective brake, reduce collision accident generation, guarantee driving safety.
Fig. 3 is the block diagram of the brake hard control system of automobile according to an embodiment of the invention.
As it is shown on figure 3, the brake hard control system of this automobile includes: detection components 100 and entire car controller 200.
Wherein, detection components 100 includes detecting the vacuum variable quantity of the vacuum booster of automobile the first detector 110 and/
Or the second detector 120 of the aperture change information of the brake pedal of detection automobile.Entire car controller 200 and detection components 100
Be connected, in order to the aperture change information according to vacuum variable quantity and/or brake pedal, entire car controller 200 judges that automobile is current
When needing to implement brake hard, obtain the current brake pressure of the master cylinder of vacuum booster, and detect the seat belt of automobile
Signal, when the current brake pressure of master cylinder is in tie-down state less than the seat belt of the maximum brake pressure preset and automobile
Time, by controlling vacuum booster so that the brake pressure of master cylinder reaches default maximum brake pressure.Wherein, first
Detector 110 can be vacuum-ness detecting device, and the second detector 120 can be angle detection device, default maximum braking pressure
Power can be demarcated according to practical situation, and the current brake pressure of master cylinder can be that driver's foot steps on brake pedal generation
's.
It is to be appreciated that the current brake pressure of the master cylinder of vacuum booster described in this embodiment, can be by even
The pressure transducer connecing master cylinder obtains.
In one embodiment of the invention, entire car controller 200 is additionally operable to judge that vacuum variable quantity is the most pre-more than first
If threshold value, and when vacuum variable quantity is more than the first predetermined threshold value, it is judged that automobile is currently needed for implementing brake hard.Wherein,
First predetermined threshold value can be demarcated according to practical situation.
In another embodiment of the present invention, the aperture change information that entire car controller 200 is additionally operable to according to brake pedal is sentenced
Whether the aperture variable quantity of disconnected brake pedal is more than the second predetermined threshold value, if the aperture variable quantity of brake pedal is pre-more than second
If threshold value, then judge that automobile is currently needed for implementing brake hard.Wherein, the second predetermined threshold value can be carried out according to practical situation
Demarcate.
In yet another embodiment of the present invention, entire car controller 200 is additionally operable to when vacuum variable quantity presets threshold more than first
When the aperture variable quantity of value and brake pedal is more than the second predetermined threshold value, it is judged that automobile is currently needed for implementing brake hard.
Specifically, when driver's foot steps on braking, entire car controller 200 can obtain the true of automobile by vacuum-ness detecting device
The vacuum variable quantity of empty booster, and the aperture change information of the brake pedal of automobile is obtained by angle detection device.As
Truly reciprocal of duty cycle variable quantity is more than the first predetermined threshold value, or the aperture variable quantity of brake pedal is more than the second predetermined threshold value, then say
Bright book driver has brake hard to be intended to, and now driver may be relatively near with the distance of front automobile, thus causes driver's
Hypertonicity, thus may cause driver's foot to step on the generation of the situations such as brake force deficiency or response delay.
Therefore, at vacuum variable quantity more than the first predetermined threshold value, or the aperture variable quantity of brake pedal is preset more than second
Presentation time, entire car controller 200 obtains the current brake pressure of master cylinder, so by connecting the pressure transducer of master cylinder
After by the current brake pressure of master cylinder with preset maximum brake pressure compare.If the current brake of master cylinder
Pressure less than the maximum brake pressure preset, then illustrates that the brake force of this automobile is not enough.Now, entire car controller 200 can enter
Whether one step detection driver fastens one's safety belt, if be detected that driver fastens one's safety belt, then entire car controller 200 can lead to
Cross control vacuum brake assistor and open corresponding electromagnetic valve, so that the current brake pressure of master cylinder reaches default maximum system
Dynamic pressure, thus increase the brake force of automobile, it is ensured that when automobile emergency brake, step on brake force at driver's foot not enough or anti-
When should postpone to cause brake pressure deficiency, the brake pressure of automobile is made to reach maximum brake pressure by controlling vacuum booster,
Realize the effective brake of automobile, reduce the generation of collision accident, guarantee driving safety.
In one embodiment of the invention, entire car controller 200 is additionally operable to work as by controlling vacuum booster so that braking is main
When the brake pressure of cylinder reaches default maximum brake pressure, also control automobile and send alarm sounds information.Wherein, warning carries
Show that information can be buzzing prompt tone, LED lamplight flicker etc..
Specifically, electromagnetic valve is opened so that the current brake of master cylinder when entire car controller 200 controls vacuum brake assistor
When pressure reaches default maximum brake pressure, entire car controller 200 also sends warning to buzzing prompting apparatus and instrument warning lamp
Information, buzzing prompting apparatus and instrument warning lamp send buzzing prompt tone and light flash according to information warning, in order to remind user,
Thus promote Consumer's Experience.
To sum up, the brake hard control system of the automobile of the embodiment of the present invention is without using tradition pre-impact or active brakes
The radar system that must carry, can reduce collision accident odds, it is to avoid radar signal is unstable or erroneous judgement band
The potential safety hazard come, and realize low cost.
The brake hard control system of automobile according to embodiments of the present invention, the vacuum booster of the first detector detection automobile
Vacuum variable quantity, the aperture change information of the brake pedal of the second detector detection automobile, entire car controller is according to vacuum
The aperture change information of variable quantity and/or brake pedal judges, when automobile is currently needed for implementing brake hard, to obtain vacuum booster
The current brake pressure of master cylinder, and detect the belt signal of automobile, when the current brake pressure of master cylinder is less than
When the maximum brake pressure preset and the seat belt of automobile are in tie-down state, by controlling vacuum booster so that master cylinder
Brake pressure reach default maximum brake pressure.This system can step on braking when automobile emergency brake at driver's foot
When power is not enough or response delay causes brake pressure deficiency, the brake pressure of automobile is made to reach maximum by controlling vacuum booster
Brake pressure, thus realize the effective brake to automobile, reduce the generation of collision accident, guarantee driving safety.
In order to realize above-described embodiment, the present invention also proposes a kind of automobile, and it includes the brake hard control system of above-mentioned automobile.
The automobile of the embodiment of the present invention, by the brake hard control system of above-mentioned automobile, it is possible to when automobile emergency brake,
When driver's foot steps on brake force deficiency or response delay causes brake pressure deficiency, make automobile by controlling vacuum booster
Brake pressure reaches maximum brake pressure, thus realizes the effective brake to automobile, reduces the generation of collision accident, ensures row
Car safety.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ",
" outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " etc. instruction orientation or position relationship be based on
Orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplify description rather than instruction or hint institute
The device that refers to or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
Bright restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed
Or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of individual element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common for this area
For technical staff, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can
Being that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, the
One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or
Oblique upper, or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ",
" lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or it is special to be merely representative of first
Levy level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, ability
The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in territory
Row combines and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (11)
1. the brake hard control method of an automobile, it is characterised in that comprise the following steps:
The aperture of the vacuum variable quantity detecting the vacuum booster of described automobile and/or the brake pedal detecting described automobile becomes
Change information；
Aperture change information according to described vacuum variable quantity and/or described brake pedal judges that described automobile is currently needed for reality
When executing brake hard, obtain the current brake pressure of the master cylinder of described vacuum booster, and detect the safety of described automobile
Band signal；
When the current brake pressure of described master cylinder is in less than the maximum brake pressure preset and the seat belt of described automobile it is
During tight state, by controlling described vacuum booster so that the brake pressure of described master cylinder reaches described default maximum system
Dynamic pressure.
2. the brake hard control method of automobile as claimed in claim 1, it is characterised in that change according to described vacuum
Amount judges that described automobile is currently needed for implementing brake hard, including:
Judge that whether described vacuum variable quantity is more than the first predetermined threshold value；
If described vacuum variable quantity is more than described first predetermined threshold value, then judge that described automobile is currently needed for implementing promptly to make
Dynamic.
3. the brake hard control method of automobile as claimed in claim 2, it is characterised in that according to described brake pedal
Aperture change information judges that described automobile is currently needed for implementing brake hard, also includes:
Aperture change information according to described brake pedal judges whether the aperture variable quantity of described brake pedal is preset more than second
Threshold value；
If the aperture variable quantity of described brake pedal is more than described second predetermined threshold value, then judge that described automobile is currently needed for reality
Execute brake hard.
4. the brake hard control method of automobile as claimed in claim 3, it is characterised in that change according to described vacuum
The aperture change information of amount and described brake pedal judges that described automobile is currently needed for implementing brake hard, also includes:
When described vacuum variable quantity more than the aperture variable quantity of described first predetermined threshold value and described brake pedal more than described the
During two predetermined threshold value, it is judged that described automobile is currently needed for implementing brake hard.
5. the brake hard control method of the automobile as according to any one of claim 1-4, it is characterised in that when by control
When making described vacuum booster so that the brake pressure of described master cylinder reaches described default maximum brake pressure, also control
Described automobile sends alarm sounds information.
6. the brake hard control system of an automobile, it is characterised in that including:
Detection components, described detection components includes the first detection detecting the vacuum variable quantity of the vacuum booster of described automobile
Device and/or detect second detector of aperture change information of brake pedal of described automobile；
Entire car controller, described entire car controller is connected with described detection components, described entire car controller in order to according to described very
The aperture change information of reciprocal of duty cycle variable quantity and/or described brake pedal judges, when described automobile is currently needed for implementing brake hard, to obtain
Take the current brake pressure of the master cylinder of described vacuum booster, and detect the belt signal of described automobile, when described system
When the current brake pressure of dynamic master cylinder is in tie-down state less than the seat belt of the maximum brake pressure preset and described automobile, logical
Cross and control described vacuum booster so that the brake pressure of described master cylinder reaches described default maximum brake pressure.
7. the brake hard control system of automobile as claimed in claim 6, it is characterised in that described entire car controller, also
For judging whether described vacuum variable quantity is more than the first predetermined threshold value, and at described vacuum variable quantity more than described first
During predetermined threshold value, it is judged that described automobile is currently needed for implementing brake hard.
8. the brake hard control system of automobile as claimed in claim 7, it is characterised in that described entire car controller, also
Judge for the aperture change information according to described brake pedal whether the aperture variable quantity of described brake pedal is preset more than second
Threshold value, if the aperture variable quantity of described brake pedal is more than described second predetermined threshold value, then judges that described automobile is currently needed for
Implement brake hard.
9. the brake hard control system of automobile as claimed in claim 8, it is characterised in that described entire car controller, also
For when described vacuum variable quantity more than the aperture variable quantity of described first predetermined threshold value and described brake pedal more than described the
During two predetermined threshold value, it is judged that described automobile is currently needed for implementing brake hard.
10. the brake hard control system of the automobile as according to any one of claim 6-9, it is characterised in that described whole
Vehicle controller, is additionally operable to work as by controlling described vacuum booster so that the brake pressure of described master cylinder reaches described default
Maximum brake pressure time, also control described automobile and send alarm sounds information.
11. 1 kinds of automobiles, it is characterised in that include the brake hard control of automobile as according to any one of claim 6-10
System processed.
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| CN201610355885.6A CN105966384B (en) | 2016-05-25 | 2016-05-25 | Automobile and emergency braking control method and system thereof |
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| CN201610355885.6A CN105966384B (en) | 2016-05-25 | 2016-05-25 | Automobile and emergency braking control method and system thereof |
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